- JourneysinmotionAsked on June 09, 2010 at 06:56 PMI am trying to alter the source code for the payment integration on my site. Mainly I am trying to do away with the checkboxes on the dropdown menues on quantity items. So basically I want the user to choose the quantity of their product from a dropdown menu (zero for default). Can anyone help me with this please? Here is the URL to the form.